maintenance/eval.php

   1 <?php
   2 /**
   3  * PHP lacks an interactive mode, but this can be very helpful when debugging.
   4  * This script lets a command-line user start up the wiki engine and then poke
   5  * about by issuing PHP commands directly.
   6  *
   7  * Unlike eg Python, you need to use a 'return' statement explicitly for the
   8  * interactive shell to print out the value of the expression. Multiple lines
   9  * are evaluated separately, so blocks need to be input without a line break.
  10  * Fatal errors such as use of undeclared functions can kill the shell.
  11  *
  12  * To get decent line editing behavior, you should compile PHP with support
  13  * for GNU readline (pass --with-readline to configure).
  14  *
  15  * This program is free software; you can redistribute it and/or modify
  16  * it under the terms of the GNU General Public License as published by
  17  * the Free Software Foundation; either version 2 of the License, or
  18  * (at your option) any later version.
  19  *
  20  * This program is distributed in the hope that it will be useful,
  21  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  22  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  23  * GNU General Public License for more details.
  24  *
  25  * You should have received a copy of the GNU General Public License along
  26  * with this program; if not, write to the Free Software Foundation, Inc.,
  27  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  28  * http://www.gnu.org/copyleft/gpl.html
  29  *
  30  * @file
  31  * @ingroup Maintenance
  32  */
  33
  34 $optionsWithArgs = array( 'd' );
  35
  36 /** */
  37 require_once __DIR__ . "/commandLine.inc";
  38
  39 if ( isset( $options['d'] ) ) {
  40         $d = $options['d'];
  41         if ( $d > 0 ) {
  42                 $wgDebugLogFile = '/dev/stdout';
  43         }
  44         if ( $d > 1 ) {
  45                 $lb = wfGetLB();
  46                 $serverCount = $lb->getServerCount();
  47                 for ( $i = 0; $i < $serverCount; $i++ ) {
  48                         $server = $lb->getServerInfo( $i );
  49                         $server['flags'] |= DBO_DEBUG;
  50                         $lb->setServerInfo( $i, $server );
  51                 }
  52         }
  53         if ( $d > 2 ) {
  54                 $wgDebugFunctionEntry = true;
  55         }
  56 }
  57
  58 $useReadline = function_exists( 'readline_add_history' )
  59                         && Maintenance::posix_isatty( 0 /*STDIN*/ );
  60
  61 if ( $useReadline ) {
  62         $historyFile = isset( $_ENV['HOME'] ) ?
  63                 "{$_ENV['HOME']}/.mweval_history" : "$IP/maintenance/.mweval_history";
  64         readline_read_history( $historyFile );
  65 }
  66
  67 while ( ( $line = Maintenance::readconsole() ) !== false ) {
  68         if ( $useReadline ) {
  69                 readline_add_history( $line );
  70                 readline_write_history( $historyFile );
  71         }
  72         $val = eval( $line . ";" );
  73         if ( wfIsHipHop() || is_null( $val ) ) {
  74                 echo "\n";
  75         } elseif ( is_string( $val ) || is_numeric( $val ) ) {
  76                 echo "$val\n";
  77         } else {
  78                 var_dump( $val );
  79         }
  80 }
  81
  82 print "\n";